Adjustable window ventilator



J.'NIERS ADJUSTABLE WINDOW VENTILATOB Oct. 18, 1927.

Filed Jime 26, 1925 cl/w 5 Joseph Niers Patented Oct. 18, 1927.

PATENT OFFICE;

JOSEPH NIERS, OF MILWAUKEE, "WISCONSIN.

ADJUSTABLE WINDOW VENIILATORv Application filed June 26, 1925. Serial No; 39,720.

This invention relates to adjustable win dow ventilators.

Objects of this invention are to provide a ventilator which is readily adjustable to different sized windows, which is held in place by the lower sash in a very positive manner, which lockswithin the slide for the casing, which is of attractive and pleasing appearance, and which may be cheaply produced.

An embodiment of the invention is shown in the accompany drawings, in which Figure 1 is a front View of a portion of the window showing the ventilator in place.

Figure 2 is a transverse sectional view through the window casing looking down upon theventilator. V

Figure 3 is a vertical. sectional view through the window and ventilator.

Referring to the drawings, it will be seen that the ventilator comprises a pair of telescopic members indicated at 1 and 2. The member 1 is provided with a rolled portion 3 which slidably engages the beaded portion 4 of the member 2. The lower end of the member 2 is upturned, as indicated at 5, and engages the downwardly turned portion of the member 1. Thus the members 1 and 2 are provided with interengaging portions at their upper and lower edges, which permit expansion and contraction of the ventilator by sliding the members inwardly or outwardly. Each member is provided with triangular end portions 6 which, as may be seen from Figure 2, are provided also with outwardly projecting offset portions 7. This offset portion is adapted to fit within the slide 8 which receives the lower sash 9, with the triangular member 6 contacting with the finishing strip 10 of the window casing.

It is to be noted further that the triangular members 6 are provided with abrupt shoulders or faces 11 which contact with the inner side ofthe bottom of the lower sash 9.

In using the device, it is merely necessary I to slightly raise the lower sash and insert the ventilator. The members 1 and 2 are slid apart until they occupy the position shown in Figure 2 with reference to the ventilator in place.

window casing. Thereafter, the lower sash is pulled downwardly until it contacts with the offset portion 7 at which time its inner face Wlll contact with the shoulder or face 11 of the member 6, thus rigidly locking the seated in front of the bottom board 12 of the It is to be noted also that the lower portion of the ventilator is.

window casing, as shown in Figure. 3, and

thus the entire ventilator is rigidly held in place and is firmly locked by the lower sash against any movement whatsoever.

It will be seen, therefore, that a ventilator has been provided for windows which will direct the air upwardly in the approved manner, and which is expansible to fit different sized windows.

Further, itwill be seen that a ventilator has been provided which may be securely locked in place by the window sash against motion in any direction andfurther, it will be noted that the ventilator is of attractive and neat appearance, and may be cheaply manufactured.

Although theinvention has been described in considerable detail, it is to be understood that the invention may be variously embodied and is, therefore, to be limited only as claimed;

It is to be noted that the ventilator is weather proofand will guard against the entrance of rain, although the window be left partly open.

I claim:

A ventilator adapted for positioning within a window casing provided with stops and may with a movable sash; said ventilator comdows of different sizes with the vertical portions fitting within the window ledge, each of said members having triangularend portions provided with outwardly projecting channels adapted for positioning between I the stops 0f the window casing and having abrupt upper shoulders adapted to beengaged by the Window sash, and having vertiretained by the joint action of the stops and cal faces above the said shoulders contacting the window sash. 10 with the inner face of the window sash, In testimony that I claim the foregoing said channels having outwardly extending I have hereunto set my hand at Milwaukee, lips fitting over the said stops whereby said in the county of Milwaukee and State of Window ventilator may be adjusted to the Wisconsin.

desired width with the channel members in position between the stops and may be JOSEPH NIERS. 

